rope distance API stuff
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@ -1232,6 +1232,8 @@ double Silkworm_RopeAddNode(double ropeId, double xPosition, double yPosition, d
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{
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Silkworm_Rope *rope = LookupRope(ropeId);
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if (rope != NULL)
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{
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double nodeId = Silkworm_CreateNode(xPosition, yPosition, rope->nodeMass, rope->friction, 1.0, rope->pushFactor);
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rope->nodeIndices = realloc(rope->nodeIndices, sizeof(uint64_t) * (rope->nodeCount + 1));
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@ -1244,6 +1246,90 @@ double Silkworm_RopeAddNode(double ropeId, double xPosition, double yPosition, d
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Silkworm_CreateLink((double)rope->nodeIndices[rope->nodeCount - 2], (double)rope->nodeIndices[rope->nodeCount - 1], length, rope->tearThreshold);
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return nodeId;
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}
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else
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{
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return -1;
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}
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}
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double Silkworm_RopeVerticalLength(double ropeId)
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{
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Silkworm_Rope* rope = LookupRope(ropeId);
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if (rope != NULL)
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{
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/* return the distance between the end node Y and the start Y */
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return LookupNode(rope->nodeIndices[rope->nodeCount - 1])->position.y - LookupNode(rope->nodeIndices[0])->position.y;
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}
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else
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{
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return -1;
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}
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}
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double Silkworm_NearestX(double ropeId, double xPosition, double yPosition)
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{
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uint32_t i;
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float nearestSqrDistance, nearestX;
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nearestSqrDistance = 9999999999.0f;
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nearestX = 9999999999.0f;
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Silkworm_Rope* rope = LookupRope(ropeId);
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if (rope != NULL)
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{
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for (i = 0; i < rope->nodeCount; i += 1)
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{
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Silkworm_Node* node = LookupNode(rope->nodeIndices[i]);
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float yDistance = node->position.y - yPosition;
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float xDistance = node->position.x - xPosition;
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float sqrDistance = xDistance * xDistance + yDistance * yDistance;
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if (sqrDistance < nearestSqrDistance)
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{
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nearestSqrDistance = sqrDistance;
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nearestX = node->position.x;
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}
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}
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}
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return nearestX;
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}
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double Silkworm_NearestY(double ropeId, double xPosition, double yPosition)
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{
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uint32_t i;
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float nearestSqrDistance, nearestY;
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nearestSqrDistance = 9999999999.0f;
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nearestY = 9999999999.0f;
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Silkworm_Rope* rope = LookupRope(ropeId);
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if (rope != NULL)
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{
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for (i = 0; i < rope->nodeCount; i += 1)
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{
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Silkworm_Node* node = LookupNode(rope->nodeIndices[i]);
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float yDistance = node->position.y - yPosition;
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float xDistance = node->position.x - xPosition;
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float sqrDistance = xDistance * xDistance + yDistance * yDistance;
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if (sqrDistance < nearestSqrDistance)
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{
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nearestSqrDistance = sqrDistance;
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nearestY = node->position.y;
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}
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}
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}
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return nearestY;
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}
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double Silkworm_RopeCreate(double xPosition, double yPosition, double mass, double friction, double windFactor, double pushFactor, double tearThreshold)
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@ -81,6 +81,9 @@ SILKWORMAPI double Silkworm_ClothFillTriangleBuffer(double clothId, double leftU
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SILKWORMAPI double Silkworm_RopeCreate(double xPosition, double yPosition, double mass, double friction, double windFactor, double pushFactor, double tearThreshold);
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SILKWORMAPI double Silkworm_RopeAddNode(double ropeId, double xPosition, double yPosition, double length);
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SILKWORMAPI double Silkworm_RopeVerticalLength(double ropeId);
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SILKWORMAPI double Silkworm_NearestX(double ropeId, double xPosition, double yPosition);
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SILKWORMAPI double Silkworm_NearestY(double ropeId, double xPosition, double yPosition);
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SILKWORMAPI void Silkworm_RopeDestroy(double ropeId);
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SILKWORMAPI double Silkworm_RopeRequiredBufferSize(double ropeId);
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SILKWORMAPI double Silkworm_RopeFillBuffer(double ropeId, double width, double leftUV, double widthUV, double topUV, double heightUV);
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